Twinning-mediated plasticity by a novel multistage twinning mode in an Mg-Al-Gd alloy

Twinning-mediated plasticity has great potential for enhancing the strength and plasticity of Mg alloys, which is limited due to the lack of twin types. Here, we report a novel multistage twinning mode, i.e. the dominant twinning mode changes from single twins to the co-existence of and twins, in a...

Full description

Saved in:
Bibliographic Details
Published in:Materials research letters 2023-11, Vol.11 (11), p.933-941
Main Authors: Zhao, Lei, Zha, Min, Gao, Yipeng, Guan, Kai, Chen, Peng, Zhang, Meng-Na, Hua, Zhen-Ming, Jia, Hai-Long, Wang, Hui-Yuan
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Deformation
Deformation mechanisms
Deformation twins
Dislocation density
Education
Gadolinium
Laboratories
magnesium alloy
Magnesium base alloys
Materials science
Mechanical properties
Plastic properties
plasticity
strain accommodation
Strain hardening
Twin boundaries
Twinning
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Twinning-mediated plasticity has great potential for enhancing the strength and plasticity of Mg alloys, which is limited due to the lack of twin types. Here, we report a novel multistage twinning mode, i.e. the dominant twinning mode changes from single twins to the co-existence of and twins, in a deformed Mg-Al-Gd alloy. Introducing novel multistage twinning mode to accommodate strains appreciably along c-axes, combined with the interactions of high-density dislocations and dense twin boundaries, guarantees the high strain hardening of Mg alloys. These findings provide new insights into deformation mechanisms and mechanical properties of Mg-alloys.
ISSN:2166-3831
2166-3831
DOI:10.1080/21663831.2023.2265411